Rugby Timed Release Niacin 100 mg supplement bottle
Rugby

Timed Release Niacin 100 mg Review

What We Researched
1 active ingredient analyzed · 7 inactive ingredients decoded · Last updated: Aug 2026
93
Product Score Excellent
Brand Score Not rated yet

Product score from label analysis. Rugby hasn't completed our brand research yet. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Niacin (as Nicotinic Acid) 1000 mg 5000%
Bioavailability Excellent

Absorption Rating

  • Niacin (as Nicotinic Acid) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Hypromellose
  • Stearic Acid
  • Silica
  • Magnesium Stearate
  • Pharmaceutical Glaze
  • Magnesium Silicate
Efficacy Very Good

Dosage Analysis

  • Niacin (as Nicotinic Acid) 1000 mg High

Supplement Facts

Ingredient Amount % Daily Value
Niacin (as Nicotinic Acid) 1000 mg 5000%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Pharmaceutical Glaze Generally_safe

It is used to coat tablets or capsules for easier swallowing or controlled release.

Magnesium Silicate Generally_safe

It is used to improve powder flow and prevent clumping.

Brand Trust Report
Rugby

Founded 1961 · Livonia, Michigan, USA · 195 products · majorrugby.com/

Transparency

1 claim

Violation History

4 incidents
Recall All liquid products manufactured by PharmaTech LLC and distributed by Rugby Laboratories2017-08-10Source
Recall Rugby Natural Iron Supplement tablets2013-01-17Source
Recall Rugby Children's Pain & Fever Concentrated Drops (Acetaminophen Drops)2011-07-21Source
Lawsuit Failure to have an effective system to identify and report suspicious orders of controlled substances.2011Source
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Frequently Asked Questions
Is Rugby Timed Release Niacin 100 mg a good supplement?

Rugby Timed Release Niacin 100 mg received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 7 inactive ingredients, 5 are rated safe and 0 are flagged for review.

What are the ingredients in Rugby Timed Release Niacin 100 mg?

Rugby Timed Release Niacin 100 mg contains 1 active ingredients: Niacin (as Nicotinic Acid) (1000 mg). Notable high-dose ingredients include Niacin at 5000% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Rugby Timed Release Niacin 100 mg safe to take?

Rugby Timed Release Niacin 100 mg has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

How much vitamin d3 should i take daily?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 150,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.